Experimental study of ELM-induced filament structures using the VUV imaging system on EAST

doi:10.1088/2058-6272/abda9d

	Experimental study of ELM-induced filament structures using the VUV imaging system on EAST
	LI, Bang 1,2; MING, Tingfeng 2; ZHUANG, Qing 2,3; LONG, Feifei 5; GAO, Shanlu 2,3; SHI, Qiqi 4; WANG, Yumin 2; LIU, Xiaoju 2; LIU, Shaocheng 2; ZENG, Long 2
刊名	PLASMA SCIENCE & TECHNOLOGY
	2021-03-01
卷号	23
关键词	filament ELM VUV imaging H mode EAST tokamak
ISSN号	1009-0630
DOI	10.1088/2058-6272/abda9d
通讯作者	MING, Tingfeng() ; GAO, Xiang(xgao@ipp.ac.cn)
英文摘要	A high-speed vacuum ultraviolet (VUV) imaging system has been developed on the Experimental Advanced Superconducting Tokamak (EAST), which selectively measures line emission with a central wavelength of 13.5 nm (CVI, n = 4-2). It has been employed to study edge/pedestal plasma behavior in EAST. Edge localized mode (ELM)-induced filament structures have been captured by the VUV imaging system during the ELMy high confinement mode discharge with both high temporal and spatial resolutions. The typical features (i.e. poloidal width and pitch angle) of the observed filaments are quantitatively characterized based on the VUV imaging data, and the dependence of these features on basic plasma parameters is analyzed. It is found that the poloidal width is proportional to the heating power, and the pitch angle is inversely proportional to the edge safety factor q(95). The scatterplot shows a positive trend between the poloidal width and the ELM amplitude defined by the relative change in stored energy. These results are based on the condition that the perturbation induced by ELMs is confined to a narrow layer in the plasma.
资助项目	National Key R&D Program of China[2017YFE0301205] ; National Natural Science Foundation of China[11975271] ; National Natural Science Foundation of China[12075284] ; National Natural Science Foundation of China[12075283] ; Chinese Academy of President's International Fellowship Initiative[2021 VMA0022]
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000624517700001
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Chinese Academy of President's International Fellowship Initiative
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120355]
专题	中国科学院合肥物质科学研究院
通讯作者	MING, Tingfeng; GAO, Xiang
作者单位	1.Anhui Univ, Hefei 230039, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Nanchang Univ, Nanchang 330031, Jiangxi, Peoples R China 5.Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China
推荐引用方式 GB/T 7714	LI, Bang,MING, Tingfeng,ZHUANG, Qing,et al. Experimental study of ELM-induced filament structures using the VUV imaging system on EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2021,23.
APA	LI, Bang.,MING, Tingfeng.,ZHUANG, Qing.,LONG, Feifei.,GAO, Shanlu.,...&GAO, Xiang.(2021).Experimental study of ELM-induced filament structures using the VUV imaging system on EAST.PLASMA SCIENCE & TECHNOLOGY,23.
MLA	LI, Bang,et al."Experimental study of ELM-induced filament structures using the VUV imaging system on EAST".PLASMA SCIENCE & TECHNOLOGY 23(2021).